How long has it been under that lighting? Without coming down on you about it, that lighting is completely inadequate to sustain an anemone. You really should have metal halide lighting, PC's, VHO's or at least some powerful T5's for an anemone - ideally metal halides.
I am not familiar with the light you say you ordered, but what is the wattage? It may not be enough, even if it is more than what you have now.
Also, try spot feeding it an occasional piece of squid or a silverside. Meaty foods are important too.